18128260

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{2153}}^1$

素因数の和:2583

約数の個数: 24

約数和(自身を含む): 38177496

約数和(自身を除く): 20049236

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 2153, 4210, 4306, 8420, 8612, 10765, 21530, 43060, 906413, 1812826, 3625652, 4532065, 9064130, 18128260]

約数ペア:

[(1, 18128260), (2, 9064130), (4, 4532065), (5, 3625652), (10, 1812826), (20, 906413), (421, 43060), (842, 21530), (1684, 10765), (2105, 8612), (2153, 8420), (4210, 4306)]